containing analogues as well as an unsubstituted BODIPY derivative. The fluorescence quantum yields were found to decrease, whereas the intersystem crossing quantum yields (PhiISC), determined by transient spectroscopy, increased in the order of the H --> Cl --> Se/I --> Te substitution. The maximum PhiISC, found for the 3-phenyltellanyl derivative, was 59%. The results are interpreted in terms of the internal
合成了三种单取代的3-苯基
硒基和3-苯基tellanyl BODIPY衍
生物,并对它们的光谱性质进行了表征,并与含有类似物以及未取代的BODIPY衍
生物的
碘和
氯原子的光谱性质进行了比较。发现荧光量子产率降低,而通过瞬态光谱法测定的系统间交叉量子产率(PhiISC)按H-> Cl-> Se / I-> Te取代的顺序增加。对于3-苯基
碲烷基衍
生物,发现最大的PhiISC为59%。根据取代基的内部重原子效应来解释结果。